supplementary

adjective

ˌsə-plə-ˈmen-tə-rē How to pronounce supplementary (audio)
Definition of supplementarynext
1
as in auxiliary
available to supply something extra when needed the teacher's edition of the textbook comes with a lot of supplementary material

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Antonyms & Near Antonyms
2
as in complementary
related to each other in such a way that one completes the other regards theology and philosophy as supplementary fields of study

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Antonyms & Near Antonyms

Example Sentences

Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Recent Examples of supplementary The supplementary motor area helps organise their sequence, and the primary motor cortex sends commands to the muscles of the trunk, shoulder, arm and wrist. — Michelle Spear, Scientific American, 11 July 2026 With two satellites at supplementary inclinations, the Newtonian perturbations are equal and opposite in the two orbital planes and cancel each other out. — Jacek Krywko, ArsTechnica, 10 July 2026 The LLCs contested, arguing the alter ego finding was inapplicable and Illinois law didn't permit such piercing in supplementary proceedings. — Jay Adkisson, Forbes.com, 7 July 2026 Poetry and Original Spoken Word are considered supplementary events, Frazier said. — Evy Lewis, Chicago Tribune, 29 June 2026 See All Example Sentences for supplementary
Recent Examples of Synonyms for supplementary
  1. auxiliary
  2. complementary
  3. additional
  4. reciprocal
  5. supplemental
  6. accessory
Adjective
  • New features include more classrooms and science labs, an auxiliary gym, changing rooms, collaborative learning spaces and two gender-neutral restrooms.
    — Mike Danahey, Chicago Tribune, 20 Aug. 2026
  • Robbie Connolly is going to go from auxiliary guitar to lead guitar.
    — Andy Greene, Rolling Stone, 17 Aug. 2026
Definition of auxiliary
Adjective
  • Strong federal oversight and strong state oversight are complementary, not contradictory.
    — John R. Gordon, Hartford Courant, 19 Aug. 2026
  • While in the French capital, Hadid and Cooper were seen wearing coordinating neutral hues and complementary Boucheron bands.
    — Laura Hawkins, Vogue, 18 Aug. 2026
Definition of complementary
Adjective
  • Someone with gestational hypertension will need more frequent monitoring, which may include home blood pressure measurements, blood and urine tests, and additional monitoring of fetal growth and well-being.
    — Faye Chiu, CNN Money, 21 Aug. 2026
  • Aurora also participated in the DuPage County joint bid to secure additional salt.
    — Steve Zalusky, Chicago Tribune, 21 Aug. 2026
Definition of additional
Adjective
  • Breaking force balance In ordinary passive systems, interactions are reciprocal.
    — Georgina Jedikovska, Interesting Engineering, 10 Aug. 2026
  • Choose the invitation, cause, or friendship that feels genuinely reciprocal.
    — Tarot.com, New York Daily News, 6 Aug. 2026
Definition of reciprocal
Adjective
  • Review details about supplemental benefits, such as dental, vision and hearing care.
    — Bob Carlson, Forbes.com, 21 Aug. 2026
  • Federal filings and reports note that supplemental public security and agency support will ultimately cost taxpayers between $10 million and $12 million.
    — Patrik Jonsson, Christian Science Monitor, 21 Aug. 2026
Definition of supplemental
Adjective
  • Each vacation rental unit can only have one agreement at a time, which is intended for properties that may have an accessory dwelling unit, Cortez said.
    — Hema Sivanandam, Mercury News, 20 Aug. 2026
  • Colorado also legalized accessory dwelling units statewide in 2024, letting homeowners build small backyard or garage apartments without needing a special hearing or approval.
    — Solomon Greene, The Conversation, 14 Aug. 2026
Definition of accessory

Browse Nearby Words

supplemental
supplementary
supplementation
See all Nearby Words

Cite this Entry

“Supplementary.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/supplementary. Accessed 24 Aug. 2026.

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More from Merriam-Webster on supplementary

Nglish: Translation of supplementary for Spanish Speakers

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